00, Emergency Situation Report, 
10, User defined messages/No header, 
10KL, KLM ETA Report, 
11, Inrange Arrival report, 
12, ?????, 
13, CMU loadsheet uplink, 
14, General aviation free text message, 
15, General aviation position report, 
15GS, Business Flight Position Report, 
16, General aviation weather request, 
16QR, Qatar Airways Position Report, 
17, Estimated Time of Arrival report, 
18, General aviation weather report, 
19, ATIS report, 
1A, Change in operating frequency, 
1B, ?????, 
1C, Flight plan request, 
1D, ?????, 
1E, ?????, 
1G, ?????, 
1L, Off message, 
1M, Estimated Time of Arrival report, 
1Q, ?????, 
1X, Loss of VHF communications, 
20, SAS: Initialization, 
21, SAS: Take off data calculation, 
22, ?????, 
23, SAS: Loadsheet uplink, 
24, SAS: Crewlist, 
24NW, Weather Request, 
25, SAS: Special load notification, 
26, SAS: Sigmet message, 
27, Weather request for SA, 
28, Weather request, 
29, SAS: Flow message, 
2A, ?????, 
2B, ?????, 
2L, ?????, 
2P, ?????, 
2S, Weather request, 
2T80, CANADA 300 AIRLINES DEFINED , 
2T89, CANADA 300 AIRLINES DEFINED , 
2U, Weather, 
30, Position report, 
30ME, Middle Eastern Position report, 
31, Weather report, 
32, ?????, 
33, ?????, 
36, In range message, 
38, ?????, 
39, Weather request, 
3E, ?????, 
3F, Estimated Time of Arrival, 
3G, Free text message, 
3J, Downlink message, 
3R, ?????, 
3S, Downlink message, 
3U, Acknowledgement, 
3V20, Position report, 
41, SAS: Flow message, 
42, ?????, 
44, ?????, 
45, ?????, 
49, ?????, 
4L, TOD??, 
4M, Cargo data, 
4P, Weather report/forecast, 
4Q, Departure report, 
4S, Weather request, 
4T, ETA report, 
4U, Weather, 
4s, Auto weather forecast, 
51, Ground GMT request response, 
52, Ground UTC request, 
53, Spare, 
54, Aircrew or ground initiated voice contact request, 
57, Alternate aircrew initiated position report, 
5D, ATIS request, 
5P, Temporary suspension of ACARS service, 
5R, Aircrew initiated position report, 
5U, Weather request, 
5V, VDL switch advisory, 
5Y, Revision to previous ETA, or diversion, 
5Y80, ATLAS AIR INC. DEFINED , 
5Z, Airline designated downlink, 
7A, Aircrew initiated engine data/takeoff thrust, 
7B, Aircrew initiated miscellaneous message, 
80, Aircrew addressed downlink, 
81, Off report, 
82, Aircrew addressed downlink, 
83, Aircrew addressed downlink, 
84, Aircrew addressed downlink, 
85, Aircrew addressed downlink, 
86, Aircrew addressed downlink, 
87, Aircrew addressed downlink, 
88, Aircrew addressed downlink, 
88SQ, Singapur Airlines weather request, 
89, Aircrew addressed downlink, 
8A, SAS Out report, 
8B, SAS Off report, 
8C, SAS On report, 
8D, SAS In report, 
8E, SAS Out/return in report, 
8G, SAS Take off data calculation request, 
8H, SAS Loadsheet request/confirmation, 
8I, SAS Flightplan request, 
8J, SAS Crewlist request, 
8X, Uplink ATIS information, 
8Z, Avionics unable to process data, 
9E30, NORTHWEST AIRLINK DEFINED , 
A0, ATIS facilities notification, 
A1, Deliver oceanic clearance, 
A3, Deliver departure clearance, 
A4, Acknowledge departure clearance, 
A5, Request position report, 
A6, Requested ADS report, 
A7, Forward free text to aircraft, 
A8, Deliver departure slot, 
A9, Deliver ATIS information, 
AA, ATC communications, 
AA10, Frequency change, 
AA14, AMERICAN AIRLINES DEFINED , 
AA18, AMERICAN AIRLINES DEFINED , 
AA40, AMERICAN AIRLINES DEFINED , 
AA5J, AMERICAN AIRLINES DEFINED , 
AB, Terminal weather information, 
AB82, Free text report, 
AC, Pushback clearance, 
AC2s, Request ATIS information, 
AC4F, Off report, 
AC4M, Printer specific message, 
AC4P, Change Acars mode , 
AC4Q, Departure message, 
AC4R, Off specific message, 
AC4T, ETA/position report, 
AC4s, Auto weather forecast, 
AD, Expected taxi clearance, 
AF, CPC command, 
AF1B, AIR FRANCE DEFINED  , 
AF1D, AIR FRANCE DEFINED , 
AF21, AIR FRANCE DEFINED  , 
AF24, AIR FRANCE DEFINED , 
AF26, AIR FRANCE DEFINED  , 
AF29, AIR FRANCE DEFINED  , 
AF2A, AIR FRANCE DEFINED  , 
AF2B, AIR FRANCE DEFINED , 
AF2C, AIR FRANCE DEFINED , 
AF2D, AIR FRANCE DEFINED  , 
AF2N, AIR FRANCE DEFINED  , 
AF2T, AIR FRANCE DEFINED  , 
AF2Z, AIR FRANCE DEFINED  , 
AF30, AIR FRANCE DEFINED , 
AF31, AIR FRANCE DEFINED , 
AF41, AIR FRANCE DEFINED  , 
AF42, AIR FRANCE DEFINED  , 
AF46, AIR FRANCE DEFINED  , 
AF4A, AIR FRANCE DEFINED  , 
AF4D, AIR FRANCE DEFINED  , 
AF4G, AIR FRANCE DEFINED , 
AF4H, AIR FRANCE DEFINED , 
AF80, AIR FRANCE DEFINED , 
AF8A, AIR FRANCE DEFINED  , 
AF8B, AIR FRANCE DEFINED  , 
AF8C, AIR FRANCE DEFINED , 
AF8D, AIR FRANCE DEFINED , 
AF8X, AIR FRANCE DEFINED , 
AN1F, AANSETT AIRLINES DEFINED , 
AS80, ALASKA AIRLINES DEFINED , 
AT15, ROYAL AIR MAROC DEFINED , 
AX, Uplink message formats, 
AY11, Out report, 
AY12, Off report, 
AY13, On report, 
AY14, Inn report, 
AY1M, ETA estimate, 
AY31, Position report, 
AY81, Free text message, 
AYX1, Weather request , 
B0, ATIS facilities notification, 
B1, Request oceanic clearance, 
B2, Request oceanic readback, 
B3, Request departure clearance, 
B4, Acknowledge departure clearance , 
B5, Provide position report, 
B6, Provide ADS report, 
B7, Forward free text to ATS, 
B8, Request departure slot, 
B9, Request ATIS information, 
BA, ATC communications, 
BA10, ETA report or FST report, 
BA12, BRITISH AIRWAYS DEFINED  , 
BA13, BRITISH AIRWAYS DEFINED  , 
BA14, BRITISH AIRWAYS DEFINED , 
BA15, Flight schedule times, 
BA80, BA Time check, 
BB, Terminal weather information, 
BC, Pushback clearance request, 
BD, Expected taxi clearance request, 
BE, CPC log-on/log-off request, 
BF, CPC wilco/unable response, 
BR13, Weather request, 
BU10, Arrival/departure report, 
BU20, Out report, 
BU21, Off report, 
BU23, Initialization, 
BU5A, Ground GMT request, 
BUX1, Weather request , 
BW80, WEST INDIAN DEFINED , 
C0, Uplink message to all cockpit printers, 
C1, Uplink message to the cockpit printer 1, 
C2, Uplink message to the cockpit printer 2, 
C3, Uplink message to the cockpit printer 3, 
CA, Printer status = error, 
CA12, Weather request, 
CB, Printer status = busy, 
CC, Printer status = in local test mode, 
CD, Printer status = no paper, 
CE, Printer status = buffer overrun, 
CF, Printer status = status communication error, 
CI20, CHINA AIRLINES DEFINED , 
CI80, CHINA AIRLINES DEFINED , 
CP80, Position report, 
DF, Digital acquisition unit, 
DH1L, Off message, 
DL80, Position report, 
E1, Internet e-mail message, 
EC, Engine display system, 
EI85, Arrival report, 
EI87, AIR LINGUS DEFINED , 
EIH1, Data download, 
F3, Dedicated transceiver advisory, 
FX10, ATIS request message, 
FX11, In range arrival report, 
FX16, Automatic position report, 
GS15, Position Report, 
H1, Message to/from terminal, 
H2, Meteorological report/command, 
H3, Icing report, 
HD, HF data radio, 
HF, HFDL position report, 
HF20, Departure aerodrome, 
HF2T, Call other aircraft, 
HV20, Resetting ACARS system, 
HX, Undelivered uplink report, 
JL12, Weather request, 
KL10, ETA report, 
KL1L, Weather request , 
KL20, Resetting ACARS system, 
KL32, Weather/flow message, 
KL41, Meet and assist, 
KL43, Acars anomaly report, 
KL44, Acars request route change, 
KLQP, Off report, 
KLQR, On report, 
KLQS, In report, 
LH10, Frequency change, 
LH1B, Off report, 
LH1C, On report, 
LH1L, Weather request, 
LH3L, Command/response uplink, 
LT27, Position report, 
LX28, Position Report, 
LX35, SWISS Position Report, 
M1, IATA departure message, 
M2, IATA arrival message, 
M3, IATA return to ramp message, 
M4, IATA return from airborne message, 
ME30, Position report, 
MU11, Present position report, 
NH13, Weather request, 
NW17, Status report, 
NW21, Weather request, 
NW24, Weather request, 
NW30, Free text message , 
NW31, Weather report, 
NW33, Position report, 
NW36, In range message, 
NW39, Free text message, 
OU26, ETA Report, 
OUHX, Weather Report, 
Q0, ACARS link test, 
Q1, ETA departure/arrival reports, 
Q2, ETA reports, 
Q3, Clock update, 
Q4, Voice circuit busy, 
Q5, Unable to process uplinked messages, 
Q6, Voice-to-ACARS changeover, 
Q7, Delay message, 
QA, Out/fuel report, 
QB, Off report, 
QC, On report, 
QD, In/fuel report, 
QE, Out/fuel destination report, 
QF, Off/destination report, 
QG, Out/return in report, 
QH, Out report, 
QK, Landing report, 
QL, Arrival report, 
QM, Arrival information report, 
QN, Diversion report, 
QP, Out report, 
QQ, Departure report, 
QR, On report, 
QR16, Position Report, 
QS, In report, 
QT, Out/return/in report, 
QX, Intercept, unable to process, 
RA, Transmit diagnostic, 
RB, Response aircraft terminal to RA message, 
S1, Network/VHF statistics report, 
S2, VHF performance report/request, 
S3, LRU configuration report/request, 
SA, Media Advisory, 
SK20, Initialization, 
SK21, Take off data calculation, 
SK23, Loadsheet uplink, 
SK24, Crewlist, 
SK25, Special load notification, 
SK26, Sigmet message, 
SK29, Flow message, 
SK31, Change frequency, 
SK41, Slot time revision, 
SK80, On track/position report, 
SK83, Flight summary (ETA est.), 
SK84, Free text message, 
SK85, Free text message, 
SK86, Position/weather report, 
SK87, Crew message, 
SK88, Msg to dispatch, 
SK89, Msg to station ahead, 
SK8A, Out report, 
SK8B, Off report, 
SK8C, On report, 
SK8D, In report, 
SK8E, Out/return in report, 
SK8G, Take off data calculation request, 
SK8H, Loadsheet request/confirmation, 
SK8I, Flightplan request, 
SK8J, Crewlist request, 
SKRA, Flow message, 
SQ, Link test message, 
SQ88, Weather request, 
T1, Cabin terminal message, 
T2, Cabin terminal message, 
UA40, UNITED AIRLINES DEFINED  , 
UA4I, UNITED AIRLINES DEFINED  , 
UA80, Position report, 
UA8X, UNITED AIRLINES DEFINED, 
UP30, Position report, 
UP31, In report, 
UP3F, ETA message, 
UP3G, Free text message, 
UP3I, On report, 
UP3J, Flight plan, 
UP3S, Maintenance message, 
UP3T, Weather report/forecast, 
UP3U, Uplink acknowledgement, 
UP47, Off report, 
UV20, Position report, 
WO, Weather observation report, 
X1, Service provider defined, 
_ , No information to transmit, 
_*, No information to transmit, 
_, No information to transmit, 
 , No information to transmit,
_d, No inforamtion to transmit,
